DIRECT_FLIGHT [Direct (DCT)]
A direct flight (DCT) between two significant points, outside the existing route network.
Attributes
TXT_RMK [Remark] optional
Domain: TXT_RMK
DIRECT_FLIGHT_CLASS [Direct (DCT) Class]
... a type of
DIRECT_FLIGHT
A category of direct flights (DCT), having some particular characteristics, such as a minimum length.
Attributes
... see as well the attributes of the super-type entity
VAL_EXCEED_LEN [Exceeding length] mandatory
A value used to indicate that only Direct Flights (DCT) that exceed this value are concerned.
Domain: VAL_DIST_HORZ
UOM_LEN [Unit of measurement [Length]] mandatory
The unit of measurement for the DCT length.
Domain: UOM_DIST_HORZ
DIRECT_FLIGHT_SEGMENT [DIRECT (DCT) Segment]
... a type of
DIRECT_FLIGHT
A direct flight (DCT) between two specified significant points.
Attributes
... see as well the attributes of the super-type entity
DISTANCE_INDICATION [Navaid - Distance indication]
A distance reference from a radio navigation aid (DME, TACAN).
For example, 37 NM FFM.
Attributes
VAL_DIST [Declared distance] mandatory
The value of the distance.
Rules:
  1. The calculated distance between the position of the navaid (DME or TACAN) providing the distance indication and the SIGNIFICANT POINT or the NAV_SYS_CHECKPOINT to which it refers must be consistent (within 1 KM) with the value of VAL_DIST..
Domain: VAL_DIST_HORZ
UOM_DIST [Unit of measurement [horizontal distance]] mandatory
The unit of measurement used to express the distance.
Domain: UOM_DIST_HORZ
TXT_RMK [Remark] optional
Domain: TXT_RMK
DME [Distance measuring equipment [DME]]
(ICAO) UHF distance measuring equipment, operating on the interrogation-answer principle. The time required for the round trip of the signal exchange is measured in the airborne DME unit and translated into distance.
Attributes
CODE_ID [Identification] mandatory
The coded identification of the DME.
Rules:
  1. CODE_ID shall not be duplicated within 600 NM of the location of the DME (see Annex 11, Appendix 2, paragraph 2.2.2).
Domain: CODE_ID_NAV_AID
GEO_LAT [Latitude] mandatory
The latitude of the position of the DME.
Domain: GEO_LAT
GEO_LONG [Longitude] mandatory
The longitude of the position of the DME.
Domain: GEO_LONG
TXT_NAME [Name] optional
The full textual name of the radio navigation aid.
Domain: TXT_NAME
CODE_TYPE [Type] optional
A code indicating the type of UHF distance measuring equipment.
E.g. DME/N, DME/W, DME/P.
Domain: CODE_TYPE_DME
CODE_CHANNEL [Channel] optional
The channel of the DME.
See Annex 10, Table A, end of Chapter 3 for channelling details and for a list of allowable values.
Rules:
  1. If CODE_CHANNEL is not specified, then VAL_GHOST_FREQ must be specified.
Domain: CODE_CHANNEL_DME
VAL_GHOST_FREQ [Frequency of virtual VHF facility] optional
The frequency of a virtual VHF facility paired with the DME according to ICAO Annex 10, table A, ch.3.
Rules:
  1. VAL_GHOST_FREQ cannot be specified if the DME is collocated with a VOR or is part of an ILS or MLS system.
  2. VAL_GHOST_FREQ must be consistent with the CODE_CHANNEL value, according to Table A, ICAO Annex 10, Vol. 1.
  3. If VAL_GHOST_FREQ is specified, then UOM_GHOST_FREQ is mandatory.
Domain: VAL_FREQ
UOM_GHOST_FREQ [Unit of measurement [frequency of virtual VHF facility]] optional
The unit of measurement of the 'ghost' frequency.
Domain: UOM_FREQ
VAL_DISPLACE [Value of displacement] optional
The value of the displacement, for example, the distance from the DME antenna to where the zero range indication occurs.
Rules:
  1. If VAL_DISPLACE is specified, then UOM_DISPLACE is mandatory.
Domain: VAL_DIST_HORZ
UOM_DISPLACE [Unit of measurement [displacement]] optional
The unit of measurement of the displacement.
Domain: UOM_DIST_HORZ
CODE_EM [Emission] optional
A code indicating the type of emission, as defined at the 1979 ITU World Administrative Radio Conference.
For example, A3E, NONA2a, G1D, etc..
Rules:
  1. The type of the DME radio signals is always pulse, therefore CODE_EM must be 'PON'.
    See ICAO Annex 10, Vol. 1, section 3.5.3.3.
Domain: CODE_EM_RDO
CODE_DATUM [Datum] mandatory
A code indicating the geodetic datum in which the geographical co-ordinates are expressed.
Rules:
  1. All geographical coordinates should be expressed in the WGS 84 system.
Domain: CODE_DATUM
VAL_GEO_ACCURACY [Geographical accuracy] optional
The horizontal distance from the stated geographical position within which there is a defined confidence of the true position falling.
Rules:
  1. If VAL_GEO_ACCURACY is specified, then UOM_GEO_ACCURACY is mandatory.
Domain: VAL_DIST_HORZ
UOM_GEO_ACCURACY [Unit of measurement [geographical accuracy]] optional
The unit of measurement for the value expressing the accuracy of the geographical co-ordinates.
Domain: UOM_DIST_HORZ
VAL_ELEV [Elevation] optional
The vertical distance of the position from Mean Sea Level. The geoidal height of the position.
Rules:
  1. If VAL_ELEV is specified, then UOM_DIST_VER is mandatory.
Domain: VAL_DIST_VER
VAL_ELEV_ACCURACY [Elevation accuracy] optional
The vertical distance from the stated elevation within which there is a defined confidence of the true position falling.
Rules:
  1. VAL_ELEV_ACCURACY may be specified only if VAL_ELEV has been specified.
Domain: VAL_DIST_VER
VAL_GEOID_UNDULATION [Geoid undulation] optional
A distance separating the geoid and the ellipsoid at that position. In respect of WGS-84 geodetic datum, the difference between the WGS-84 ellipsoidal height and geoidal height represents geoidal undulation.
Rules:
  1. VAL_GEOID_UNDULATION may be specified only if VAL_ELEV has been specified.
Domain: VAL_DIST_VER
UOM_DIST_VER [Unit of measurement [vertical distance]] optional
The unit of measurement for vertical distances: elevation, geoidal undulation.
Domain: UOM_ELEV
VAL_CRC [Cyclic redundancy check] optional
Hexadecimal value of a 32-bit polynominal cyclic redundancy check (CRC) over the values of a selected set of attributes that model critical, essential and routine data, according to ICAO Annex 15, item 3.2.10.
Notes:
Applications implementing the model shall decide and notify the specific attributes which are used for the CRC calculations, taking into consideration the requirements of the ICAO Annex 15.
Domain: VAL_HEX
TXT_VER_DATUM [Vertical Datum] optional
Attribute to take the "Vertical Datum" (viz. the tide gauge to determine MSL - ex.: "AMSTERDAM GAUGE", "NEWLYN" etc.).
Domain: TXT_DESCR
TXT_RMK [Remark] optional
Domain: TXT_RMK
DME_USAGE_LIMIT [DME usage limitation]
All limitations of the same type (such as, coverage, usability, out of tolerance, etc.) of a DME, described using circular sector volumes.
Attributes
CODE_TYPE [Limitation type] mandatory
A code indicating the type of radio navigation aid limitation.
Rules:
  1. If CODE_TYPE='CVR' ('coverage'), then VAL_DIST_OUTER is mandatory.
  2. If CODE_TYPE='SCL' ('scalloping'), then VAL_ANGLE_SCALLOP is mandatory.
Domain: CODE_TYPE_NAV_AID_LIMIT
TXT_RMK [Remark] optional
Domain: TXT_RMK
EN_ROUTE_RTE [En-route route]
A specified route designed for channelling the flow of traffic as necessary for the provision of air traffic services, from the end of the take-off and initial climb phase to the commencement of the approach and landing phase.
Notes:
The term 'En-Route Route' is used to mean variously, airway, advisory route, controlled or uncontrolled route, etc. excluding arrival and departure routes.
Rules:
  1. The route should not have gaps: not more than 2 significant points should be the start or the end of a single segment of the same route..
  2. The route should not have branches: no significant point should be the start or end of more than tzo segments of the same route..
  3. The related route segments should be described in order: no significant point should be the start of more than one segment of the same route; no significant point should be the end of more than one segment of the same route..
Attributes
TXT_DESIG [Designator] mandatory
The designator of the ATS route.
Rules:
  1. The route designator has to be compliant with the rules defined by ICAO Annex 11, Appendix 1, section 2. The rule consists therefore of the following parts:
    - The route designator consists at most of 6 uppercase characters and ciphers.
    - The designator starts with one or two uppercase characters and is followed by a number between 1 and 999 without leading zeros and may end with an additional character.
    - Of the three possible characters the first one is optional and may be 'K', 'U' or 'S'.
    - Of the three possible characters the second one is mandatory and may be 'A', 'B', 'G', 'H', 'J', 'L', 'M', 'N', 'P', 'Q', 'R', 'T', 'V', 'W', 'Y' or 'Z'.
    - Of the three possible characters the third one (after the number) is optional and may be 'F', 'G', 'Y' or 'Z'.
    - The following characters are not allowed in any position: 'C', 'D', 'E', 'I', 'O' and 'X'.
Domain: TXT_DESIG_RTE
TXT_LOC_DESIG [Area designator] mandatory
A textual description of the area in which a designated route is situated.
Notes:
This mandatory attribute is necessary to distinguish between routes with the same designator, situated in different regions of the world.
Domain: TXT_DESIG
TXT_RMK [Remark] optional
Domain: TXT_RMK
FATO [Final approach and take-off area [FATO]]
A defined area over which the final phase of the approach manoeuvre to hover or land is completed and from which the take-off manoeuvre is commenced and, where the FATO is to be used by performance class 1 helicopters, includes the rejected take-off area available.
Notes:
This entity describes the physical area of the FATO, while the characteristics of the two approach and take-off directions associated with it are described in another entity.
Attributes
TXT_DESIG [Designator] mandatory
The full textual designator of the final approach and take-off area, used to uniquely identify it at an aerodrome/heliport which has more than one. For example, 09/27, 02R/20L, ...
Domain: TXT_DESIG
[TXT_NAME] DEPRECATED-4.5 [Name] optional
The full textual name of the final approach and take-off area, used to uniquely identify it at an aerodrome/heliport which has more than one.
For example, FATO 1, FATO 09/27, etc..
Domain: TXT_NAME
VAL_LEN [Length] optional
The value of the physical length of the FATO area.
Rules:
  1. If VAL_LEN is specified, then UOM_DIM is mandatory.
Domain: VAL_DIST_HORZ
VAL_WID [Width] optional
The value of the physical width of the FATO area.
Rules:
  1. If VAL_WID is specified, then UOM_DIM is mandatory.
Domain: VAL_DIST_HORZ
UOM_DIM [Unit of measurement [horizontal dimension]] optional
The unit of measurement expressing the horizontal dimensions of the final approach and take-off area.
Domain: UOM_DIST_HORZ
[CODE_COMPOSITION] DEPRECATED-4.5 [Surface composition] optional
A code indicating the composition of the FATO surface. For example, asphalt, concrete etc..
Domain: CODE_COMPOSITION_SFC
[CODE_COND_SFC] DEPRECATED-4.5 [Surface condition] optional
A code indicating the condition of the FATO surface.
Domain: CODE_COND_SFC
[CODE_STRENGTH] DEPRECATED-4.5 [Surface strength method] optional
A code indicating the method used to measure the surface strength.
Rules:
  1. If CODE_STRENGTH has the value 'PCN', then the value of TXT_DESCR_STRENGTH shall conform to the rules for the PCN-ACN method, as specified in ICAO Annex 14, item 2.6.
    Examples:
    - '80/R/B/W/T'
    - '40/ F/ B /0.80 MPa /T'
    - '50/F/A/Y/U Note: - Composite construction'
    - '50/F/A/Y/U Note: - The reported PCN is subject to a B747-400 all-up mass limitation of 390 000 kg.'
    If no method is indicated in the 'Surface strength method' field, then there are no restrictions with regard to the content of this field. For example: 'LCN 72, h= 56'.
Domain: [CODE_STRENGTH_SFC]
[TXT_DESCR_STRENGTH] DEPRECATED-4.5 [Surface strength] optional
The surface strength, in character format, according to the value of the code_strength attribute.
For example, 80/R/B/W/T for a PCN type value.
Domain: TXT_DESCR
TXT_PROFILE [Profile description] optional
A textual description of the FATO profile.
Notes:
The profile shall be described in the direction defined from the threshold with the lower runway direction designation number towards the opposite runway threshold.
Domain: TXT_DESCR
TXT_MARKING [Marking] optional
A textual description of the FATO marking.
Domain: TXT_DESCR
CODE_STS [Operational status] optional
A code indicating the operational status of a FATO.
For example, serviceable, unserviceable, closed, work in progress, etc.
Domain: CODE_STS_SFC
TXT_RMK [Remark] optional
Domain: TXT_RMK
FATO_CLINE_POINT [FATO - centre line position]
A position on the centre line of a Final Approach and Take-Off area.
Rules:
  1. The distance between the first and the last FATO_CLINE_POINT associated to the same FATO cannot exceed 1 KM.
  2. The position given by GEO_LAT, GEO_LONG must be plausibly close (less than 20km) to that of the ARP of the related AD_HP..
Attributes
GEO_LAT [Latitude] mandatory
The latitude of the position of the FATO centre line point.
Domain: GEO_LAT
GEO_LONG [Longitude] mandatory
The longitude of the position of the FATO centre line point.
Domain: GEO_LONG
CODE_DATUM [Datum] mandatory
A code indicating the geodetic datum in which the geographical co-ordinates are expressed.
Rules:
  1. All geographical coordinates should be expressed in the WGS 84 system.
Domain: CODE_DATUM
VAL_GEO_ACCURACY [Geographical accuracy] optional
The horizontal distance from the stated geographical position within which there is a defined confidence of the true position falling.
Rules:
  1. If VAL_GEO_ACCURACY is specified, then UOM_GEO_ACCURACY is mandatory.
Domain: VAL_DIST_HORZ
UOM_GEO_ACCURACY [Unit of measurement [geographical accuracy]] optional
The unit of measurement for the value expressing the accuracy of the geographical co-ordinates.
Domain: UOM_DIST_HORZ
VAL_ELEV [Elevation] optional
The vertical distance of the position from Mean Sea Level. The geoidal height of the position.
Rules:
  1. If an occurrence of this entity is at the same time threshold of a FATO, then this attribute is mandatory.
  2. If VAL_ELEV is specified, then UOM_DIST_VER is mandatory.
Domain: VAL_DIST_VER
VAL_ELEV_ACCURACY [Elevation accuracy] optional
The vertical distance from the stated elevation within which there is a defined confidence of the true position falling.
Rules:
  1. VAL_ELEV_ACCURACY may be specified only if VAL_ELEV has been specified.
Domain: VAL_DIST_VER
VAL_GEOID_UNDULATION [Geoid undulation] optional
A distance separating the geoid and the ellipsoid at that position. In respect of WGS-84 geodetic datum, the difference between the WGS-84 ellipsoidal height and geoidal height represents geoidal undulation.
Rules:
  1. VAL_GEOID_UNDULATION may be specified only if VAL_ELEV has been specified.
Domain: VAL_DIST_VER
UOM_DIST_VER [Unit of measurement [vertical distance]] optional
The unit of measurement for vertical distances: elevation, geoidal undulation.
Domain: UOM_ELEV
VAL_CRC [Cyclic redundancy check] optional
Hexadecimal value of a 32-bit polynominal cyclic redundancy check (CRC) over the values of a selected set of attributes that model critical, essential and routine data, according to ICAO Annex 15, item 3.2.10.
Notes:
Applications implementing the model shall decide and notify the specific attributes which are used for the CRC calculations, taking into consideration the requirements of the ICAO Annex 15.
Domain: VAL_HEX
TXT_VER_DATUM [Vertical Datum] optional
Attribute to take the "Vertical Datum" (viz. the tide gauge to determine MSL - for example, "AMSTERDAM GAUGE", "NEWLYN" etc.).
Domain: TXT_DESCR
TXT_RMK [Remark] optional
Domain: TXT_RMK
FATO_DIRECTION [Approach and take-off direction of a FATO]
The approach and take-off direction of a FATO area for helicopters.
Attributes
TXT_DESIG [Designator] mandatory
The full textual designator of the FATO direction.
For example, 27, 35L, 01R, etc..
Rules:
  1. TXT_DESIG must have between 2 and 3 characters, of which the first 2 may be only digits, which indicate an integer value between 01 and 36, inclusive. Examples: 09, 09L, 09R, 09C, 09T, etc...
    .
Domain: TXT_DESIG
VAL_TRUE_BRG [True bearing] optional
The value of the true bearing.
Domain: VAL_ANGLE_BRG
VAL_MAG_BRG [Magnetic bearing] optional
The value of the magnetic bearing.
Domain: VAL_ANGLE_BRG
CODE_TYPE_VASIS [Type] optional
A code indicating the type of visual approach slope indicator system.
For example, VASIS, A-VASIS, PAPI, A-PAPI, etc..
Domain: CODE_TYPE_VASIS
CODE_PSN_VASIS [VASIS position] optional
A code describing a position, relative to the centreline, of the visual approach slope indicator for a FATO/RWY direction.
Domain: CODE_PSN_REL_AXIS
NO_BOX_VASIS [VASIS number of boxes] optional
The number of boxes that compose the visual approach slope indicator system.
Domain: NO_NUMBER
CODE_PORTABLE_VASIS [Portable VASIS] optional
A code indicating whether the visual approach slope indicator system is a portable one.
Domain: CODE_YES_NO
[TXT_DESCR_PSN_VASIS] DEPRECATED-4.5 [VASIS position description] optional
A textual description of the position where the visual approach slope indicator system has been installed.
Domain: TXT_DESCR
VAL_SLOPE_ANGLE_GP_VASIS [VASIS slope angle] optional
The appropriate approach slope angle to be used by helicopters using the approach.
Domain: VAL_ANGLE
VAL_MEHT [Minimun eye height over threshold] optional
The Minimum Eye Height over Threshold (MEHT) value.
Rules:
  1. If VAL_MEHT is specified, then UOM_MEHT is mandatory.
Domain: VAL_DIST_HORZ
UOM_MEHT [Unit of measurement [minimum eye height over threshold]] optional
The unit of measurement for the Minimum Eye Height over Threshold (MEHT) value.
Domain: UOM_DIST_HORZ
TXT_RMK [Remark] optional
Domain: TXT_RMK